thanks for the information... guess i'm just going to continue and flash a new rom and see if it gets better.

worst case scenario i'll brick it and ask for a refund

Don't know if they'd play along (UID = user induced damage) and it really would be a shame.
You could try to return it to the vendor. They may not check if it is unlocked. Check the return policy.
Highly unlikely that unlocking caused this, so I think you're innocent and should not be left holding the bag for what is most likely a HW defect. Contact the seller (go there if brick&mortar) send them a screenshot or photo. Most likely they'll exchange it.

I always wait a month before I do something to a device that may affect warranty. Give faulty hardware a chance to manifest itself...

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